mport verify can compare stale checksum data after hashing failures
Priority LOW 10CWE-354Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
mport is the MidnightBSD Package Manager. Prior to 2.7.8, mport_verify_package() in libmport/verify.c could continue after MD5File() or SHA256_File() failed and compare an expected checksum with stale data in the hash buffer rather than a newly computed digest. An attacker able to influence an installed file or the conditions that make hashing fail could receive a misleading integrity result or hide a checksum failure. This issue is fixed in version 2.7.8.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00113 1st percentileScored 2026-11-07
Fix Fixed mport (MidnightBSD): 2.7.8
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MidnightBSD | mport | before 2.7.8 | 2.7.8 | Patch available | CNA |
- mport VendorMidnightBSD Affected before 2.7.8 Fixed in 2.7.8 Patch available CNA
Remediation
- Fix · CNA mport (MidnightBSD) Fixed in 2.7.8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-54578
References
More MidnightBSD vulnerabilities
- TI-2008-04392 The TCP implementation in (1) Linux, (2) platforms based on BSD Unix, (3) Microsoft… CVSS 2.0HIGH 7.1
- TI-2009-00656 The pf_test_rule function in OpenBSD Packet Filter (PF), as used in OpenBSD 4.2 through… CVSS 2.0HIGH 7.8
- TI-2026-39418 mport package bundle downloads allow unsafe destination filenames CVSS 4.0HIGH 8.3
- TI-2026-39415 mport index decompression can leave partial or corrupt index data after zstd failures CVSS 4.0HIGH 8.3
- TI-2026-39416 mport bootstrap index fetch can continue after hash verification failure CVSS 4.0HIGH 8.3
- TI-2026-39421 mport permits repository and package mirror fetches over insecure transport CVSS 4.0MEDIUM 6.0
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences